Transmitted Infrared Photography (IRT), when applicable, is far more powerful than standard infrared (IR) imaging. This case study illustrates the difference vividly.

We examined an early 20th-century Persian manuscript with a later drawing attached over the text, partially obscuring it. While the IR image reveals some of the hidden writing, the IRT image—captured with the SALVO Imaging Panel—uncovers much more of the underlying text.

Other imaging methods also contribute valuable insights. For instance, the UVF image highlights the strong, characteristic fluorescence of the orange pigment, which is particularly useful for identification.

This case study underscores a key point: the strength of technical photography lies in the sheer variety of images produced. Many may reveal little, but some often expose remarkable and unexpected details.